Craftsman Mower model #917.28813 won't start
	
	
		Our mower won't turn over and the lights won't go on. We have a brand new battery that we purchased 4 months ago, husband put a new spark plug & gas filter in it. 
A few days ago the mower would run fine but then started to bog down and just die out. We let it rest for a little bit and it would start right up and a few minutes later it would do the same and just die out. Now it's not wanting to start at all. We have a seat switch on order to see if that is the cause but other than that we are at a loss. 
Could the seat switch cause the mower to not even turn over or the lights go on? 
Any help is appreciated.